Gang-saw frame



Jilly 24, 1923- O. L. JOHNSON GANG SAW FRAME Filed Sept. 1922 Patented July 24, 1923.

barren .i raries OSCAR L. JOHNSON, OF PROCTOE, V'EBMUNT, AfiSIGNOR TO VERMONT MARBLE COM- PANY, A CORPORATION OF VERMONT.

GANG-SAW FRAME.

Application filed September 5, 1922.

To all whom 2'25 may concern:

Be it known that 1, Oscar. L. Jonnson,

a citizen of the United States, residing at Proctor, in the county of Butland and State 5 of Vermont, have invented or discovered certain new and useful Improvements in Gang Saw Frames, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to gang saw frames for stone sawing machines, and has for its object to provide a novel construction of the head blocks thereof whereby the said. head blocks will be stiffened so as to add very materially to the durability of the frames. To this end the improved head blocks consist of channel bars, preferably of rolled steel, said channel bars being reinforced by steel webs welded at their sides to the flanges of the channel bars, said steel webs preferably having, between the ends of the channel bars, inwardl inclined ends which are also welded to the bottoms of the channel bars. These reinforced channel bars, in the head blocks, are preferably arranged back to back, and are preferably separated from each other and secured together by suitable bolts.

Tn the accompanying drawings Fig. 1 is a plan View of the improved gang saw frame and Fig. 2 is an edge view thereof. 8 is a partial edge view of one of the head blocks showing the reinforcing webs in dotted lines, and Fig. 4 is a central section of one of the head blocks.

Referring to the drawings, 12 denotes the side bars of the gang frame, and by which the head blocks or end pieces of the frame are suitably connected. Each of the said head blocks comprises two channel bars 13 preferably arranged back to back, as more clearly shown in Fig. 4, and to the flanges of each of the channel bars of the head block shown in Figs. 3 and f and at the right in Figs. 1 and 2 is welded a steel web 14, said webs extending throughout the greater part of the lengths of the said channel bars. The webs 14E are preferably constructed with inclined ends extending inward and welded to the bottom of the channel bars, as more clearly shown in Fig. 3.

These reinforced channel bars are prefer- Serial inc. 586,182.

ably separated from each other at their ends either by portions of the side bars 12 of the frame, or by suitable blocks placed be tween their ends, and said channel bars are also spaced apart from each other at their middle portions by plates 3.5. The channel bars composing the head blof -1 of the frame are bolted at their ends at the corners of the frame to the side he l2, and also bolted together at their middle portions, as shown in Figs. l and The swinging frame is prpvided 51-. IS corners with eye pieces 1 for the attachment of the means by whit: it is to be suspended.

Bv reinforcing the channel bars of head blocks with the weld l in steel webs ness, but of ive lightness, pro vidzd. as w crstood; and owiniz' to this reinforced -.onstrnc ion the life a gang aw frame s In the construction shr .ll one on. I head blocks reiilforced in the above described. as it is found in that one end only of the ang saw fran'ie i likely to give trouble b breakinw but i will be obvious that both blo be so constructed should such additional strength he found necessary or desirable. Havingthus described my inveition claim and desire to secure by Lette-.. 1.. A gang saw frame for stone saw. machines having a head bl c; consisting of channel bars spaced apart from each other secured together and to the side bars of the frame, said channel bars being is m vided. with reinforcing steel webs welded a their edges to the flanges of said channel bars. 7

gang saw frame for stone sawing machines having a head block consisting of channel bars spaced apart from each other and secured together and to the side bars of the frame, said channel. bars being provided with reinforcing steel webs welded at their edges to the flanges of said channel bars, said webs having inclined ends extending to the bottoms of said channel bars and welded to said bottoms.

In testimony whereof I allix my signature.

OSCAR L. JOHNSON. 

